.signal-widget {
  --signal-bg: var(--color-bg);
  --signal-bg-secondary: var(--color-bg-secondary);
  --signal-text: var(--color-text);
  --signal-text-secondary: var(--color-text-secondary);
  --signal-muted: var(--color-text-muted);
  --signal-accent: var(--color-accent);
  --signal-border: var(--color-border-subtle);
  margin: 2rem 0 3rem;
  border: 1px solid var(--signal-border);
  color: var(--signal-text);
  background: var(--signal-bg);
  font-family: inherit;
  line-height: 1.45;
  transition: color 0.3s ease, background-color 0.3s ease, border-color 0.3s ease;
}

.signal-widget *,
.signal-widget *::before,
.signal-widget *::after {
  box-sizing: border-box;
}

.signal-stage,
.signal-controls,
.signal-readout {
  padding: 1.25rem;
}

.signal-stage,
.signal-controls {
  border-bottom: 1px solid var(--signal-border);
}

.signal-stage {
  min-height: 8rem;
  background: var(--signal-bg-secondary);
}

.signal-crowd-stage {
  display: flex;
  gap: 1.25rem;
  align-items: center;
}

.signal-tower {
  width: 6.5rem;
  flex: 0 0 auto;
  fill: none;
  stroke: var(--signal-text);
  stroke-width: 2.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.signal-waves,
.signal-beam {
  stroke: var(--signal-accent);
}

.signal-dot {
  fill: var(--signal-accent);
  stroke: none;
}

.signal-people {
  display: flex;
  flex: 1;
  flex-wrap: wrap;
  gap: 0.4rem 0.55rem;
  align-content: center;
  min-height: 6.5rem;
}

.signal-person {
  width: 1.25rem;
  height: 1.4rem;
  color: var(--signal-text);
}

.signal-person.is-you {
  color: var(--signal-accent);
}

.signal-people-more {
  align-self: center;
  color: var(--signal-muted);
  font-family: var(--font-mono, monospace);
  font-size: 0.75rem;
  font-weight: 700;
}

.signal-control-label,
.signal-caption,
.signal-pipe-caption,
.signal-gauge > div:first-child,
.signal-icon-readout {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem;
}

.signal-control-label > span,
.signal-caption > span:first-child,
.signal-instrument > div > span:first-child,
.signal-gauge > div:first-child > span:first-child,
.signal-icon-readout > span {
  color: var(--signal-muted);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.signal-control-label strong {
  font-family: var(--font-mono, monospace);
  font-size: 1.35rem;
}

.signal-widget input[type="range"] {
  width: 100%;
  height: 2px;
  margin: 1rem 0;
  appearance: none;
  border: 0;
  background: var(--signal-text);
  accent-color: var(--signal-accent);
}

.signal-widget input[type="range"]::-webkit-slider-thumb {
  width: 1.25rem;
  height: 1.25rem;
  appearance: none;
  border: 3px solid var(--signal-bg);
  border-radius: 50%;
  background: var(--signal-accent);
  box-shadow: 0 0 0 1px var(--signal-text);
  cursor: pointer;
}

.signal-widget input[type="range"]::-moz-range-thumb {
  width: 1.25rem;
  height: 1.25rem;
  border: 3px solid var(--signal-bg);
  border-radius: 50%;
  background: var(--signal-accent);
  box-shadow: 0 0 0 1px var(--signal-text);
  cursor: pointer;
}

.signal-ticks,
.signal-pipe-caption,
.signal-gauge small {
  display: flex;
  justify-content: space-between;
  color: var(--signal-muted);
  font-size: 0.72rem;
}

.signal-tile {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--signal-border);
  background: var(--color-code-bg);
  line-height: 0;
}

.signal-tile canvas {
  display: block;
  width: 100%;
  height: auto;
  image-rendering: pixelated;
}

.signal-badge,
.signal-buffering {
  position: absolute;
  color: var(--color-code-text);
  background: rgba(0, 0, 0, 0.58);
  font-family: var(--font-mono, monospace);
  font-size: 0.68rem;
  font-weight: 700;
  line-height: 1.4;
}

.signal-badge {
  top: 0.6rem;
  right: 0.6rem;
  padding: 0.2rem 0.45rem;
}

.signal-buffering {
  display: none;
  inset: 0;
  align-items: center;
  justify-content: center;
}

.signal-caption {
  justify-content: flex-start;
  margin: 0.65rem 0 0;
}

.signal-caption strong {
  font-size: 1.05rem;
}

.signal-caption .mbps {
  color: var(--signal-muted);
  font-family: var(--font-mono, monospace);
  font-size: 0.75rem;
}

.signal-pipe {
  height: 0.75rem;
  margin-top: 1rem;
  overflow: hidden;
  border: 1px solid var(--signal-border);
  background: var(--signal-bg-secondary);
}

.signal-pipe span {
  display: block;
  width: 100%;
  height: 100%;
  background: var(--signal-accent);
  transition: width 0.1s linear;
}

.signal-pipe-caption {
  margin-top: 0.35rem;
}

.signal-instrument {
  margin-top: 1rem;
  border-top: 1px solid var(--signal-border);
}

.signal-instrument > div {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  min-height: 3rem;
  border-bottom: 1px solid var(--signal-border);
  font-family: var(--font-mono, monospace);
  font-size: 0.75rem;
}

.signal-instrument > div:last-child {
  border-bottom: 0;
}

.signal-instrument small {
  margin-left: auto;
  color: var(--signal-muted);
  text-align: right;
}

.signal-bars {
  width: 1.85rem;
  height: 1.85rem;
}

.signal-scene {
  display: block;
  width: 100%;
  max-height: 12rem;
  fill: none;
  stroke: var(--signal-text);
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.signal-glass {
  fill: var(--signal-border);
}

.signal-beam {
  stroke-width: 2;
  stroke-dasharray: 5 5;
}

.signal-beam-weak {
  opacity: 0.3;
}

.signal-segmented {
  display: inline-flex;
  overflow: hidden;
  border: 1px solid var(--signal-text);
}

.signal-segmented button {
  appearance: none;
  border: 0;
  border-right: 1px solid var(--signal-text);
  padding: 0.65rem 1rem;
  color: var(--signal-text);
  background: var(--signal-bg);
  font: inherit;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  cursor: pointer;
}

.signal-segmented button:last-child {
  border-right: 0;
}

.signal-segmented button[aria-pressed="true"] {
  color: var(--signal-bg);
  background: var(--signal-text);
}

.signal-gauge {
  margin-bottom: 1rem;
}

.signal-gauge > div:first-child {
  margin-bottom: 0.4rem;
}

.signal-gauge > div:first-child > span:last-child {
  color: var(--signal-muted);
  font-family: var(--font-mono, monospace);
  font-size: 0.75rem;
}

.signal-gauge-track {
  position: relative;
  height: 0.5rem;
  background: var(--signal-bg-secondary);
}

.signal-gauge-track span {
  position: absolute;
  inset: 0 auto 0 0;
  background: var(--signal-text);
  transition: width 0.25s ease;
}

.signal-gauge-track span.is-bad {
  background: var(--signal-accent);
}

.signal-gauge-track i {
  position: absolute;
  top: -0.2rem;
  bottom: -0.2rem;
  width: 2px;
  background: var(--signal-text);
  opacity: 0.35;
}

.signal-ladder {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.4rem;
  margin: 1.25rem 0;
}

.signal-ladder > span {
  border: 1px solid var(--signal-border);
  padding: 0.6rem 0.2rem;
  color: var(--signal-muted);
  font-family: var(--font-mono, monospace);
  font-size: 0.72rem;
  font-weight: 700;
  text-align: center;
}

.signal-ladder > span small {
  display: block;
  margin-top: 0.2rem;
  font-family: inherit;
  font-size: 0.6rem;
}

.signal-ladder > span.is-reachable {
  border-color: var(--signal-text);
  color: var(--signal-text);
}

.signal-ladder > span.is-active {
  border-color: var(--signal-accent);
  color: var(--signal-accent);
  box-shadow: inset 0 0 0 1px var(--signal-accent);
}

.signal-roof-stage,
.signal-comparison {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 1rem;
  align-items: center;
  text-align: center;
}

.signal-roof-stage > div {
  display: grid;
  gap: 0.3rem;
}

.signal-roof-stage small,
.signal-comparison > div > span,
.signal-verdict span {
  color: var(--signal-muted);
  font-size: 0.72rem;
}

.signal-network-icon {
  color: var(--signal-text);
  font-family: var(--font-mono, monospace);
  font-size: 2rem;
  font-weight: 700;
}

.signal-network-multi {
  color: var(--signal-accent);
}

.signal-versus {
  color: var(--signal-muted);
  font-style: italic;
}

.signal-comparison {
  grid-template-columns: 1fr 1fr;
  align-items: start;
}

.signal-comparison > div > span {
  display: block;
  min-height: 2.5em;
  margin-bottom: 0.5rem;
  font-weight: 700;
}

.signal-tile.is-winner {
  outline: 2px solid var(--signal-accent);
  outline-offset: 2px;
}

.signal-verdict {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding: 0 1.25rem 1.25rem;
}

.signal-verdict strong {
  padding: 0.45rem 0.7rem;
  color: var(--signal-bg);
  background: var(--signal-text);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.signal-trainset {
  stroke: var(--signal-text);
  stroke-width: 3;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.signal-trainset .signal-train-body {
  fill: var(--signal-bg-secondary);
}

.signal-trainset .signal-train-window-band,
.signal-trainset .signal-train-nose-window {
  fill: var(--signal-text);
  stroke-width: 1.5;
}

.signal-trainset .signal-train-stripe {
  fill: var(--signal-accent);
  stroke: none;
}

.signal-trainset .signal-train-detail,
.signal-trainset .signal-train-pantograph,
.signal-trainset .signal-train-bogies {
  fill: none;
}

.signal-trainset .signal-wheel-outer circle {
  fill: var(--signal-bg);
  stroke: var(--signal-text);
}

.signal-trainset .signal-wheel-inner circle {
  fill: var(--signal-text);
  stroke: none;
}

#s4-pill rect {
  fill: var(--signal-bg);
  stroke: var(--signal-text);
}

#s4-pill text {
  fill: var(--signal-accent);
  stroke: none;
  font-family: inherit;
  font-size: 9px;
  font-weight: 700;
  text-anchor: middle;
}

.signal-chart {
  display: block;
  width: 100%;
  height: auto;
  margin: 0 0 1rem;
  fill: none;
  font-family: inherit;
}

.signal-chart line,
.signal-chart polyline {
  vector-effect: non-scaling-stroke;
}

.signal-chart text {
  fill: var(--signal-muted);
  stroke: none;
  font-size: 7px;
}

.signal-chart-axis {
  stroke: var(--signal-border);
}

#s4-band {
  fill: var(--signal-accent);
  opacity: 0.08;
}

#s4-thresh {
  stroke: var(--signal-accent);
  stroke-dasharray: 3 3;
}

#s4-lte {
  stroke: var(--signal-text);
  stroke-width: 2;
}

#s4-nr {
  stroke: var(--signal-accent);
  stroke-width: 2;
}

#s4-marker {
  stroke: var(--signal-text);
  stroke-width: 1.5;
}

.signal-chart .signal-chart-nr-label {
  fill: var(--signal-accent);
}

.signal-icon-readout {
  margin-top: 1rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--signal-border);
}

.signal-icon-readout strong {
  color: var(--signal-accent);
}

.signal-icon-readout small {
  margin-left: auto;
  color: var(--signal-muted);
}

@media (max-width: 560px) {
  .signal-stage,
  .signal-controls,
  .signal-readout {
    padding: 1rem;
  }

  .signal-tower {
    width: 4.5rem;
  }

  .signal-person {
    width: 1rem;
    height: 1.15rem;
  }

  .signal-comparison {
    grid-template-columns: 1fr;
  }

  .signal-comparison > div > span {
    min-height: 0;
  }

  .signal-ladder {
    grid-template-columns: repeat(2, 1fr);
  }

  .signal-instrument > div {
    flex-wrap: wrap;
  }
}

@media (prefers-reduced-motion: reduce) {
  .signal-widget *,
  .signal-widget *::before,
  .signal-widget *::after {
    scroll-behavior: auto;
    transition-duration: 0.01ms;
    animation-duration: 0.01ms;
    animation-iteration-count: 1;
  }
}